Press.



Fa Sn v PRESS.. PPLICATION FILED JULY 91.11911..

1,247,078.v I flammea Nov. 20,1917.

I I? 1 Y' portant respectsas will hereinafterbe pointand with these and related objects 1n ed out forth and claimed.-

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To aZZww/ m z'zfmag/ concern: y 1

Be .it known that I, FRED' S. CARVER, a citizen Aof the United States, and a, resident of East Orange, county of Essex, and State."- of kNew Jersey, have invented certain new" anduseful Improvementsfin Presses, 'of

which the following is a speciicaticn.

This invention relates to presses `and more particularly to presses for extracting viiuids from substantially semi-fluid` vmaterial, as, for example, for .extracting thefluid from round cocoa beans in the manllfac- .ture o chocolate and similar preparations..

' The object of the invention is' the.imy

provement of devices of this character `in irnview the invention consists of the parts, im'- 'provements and combinations. herein set In the drawings forming part'fof this specification an embodiment of the invention is illustrated, butl it is to bek lunderstood that such drawings lare for the purpose of affording. a lclear disclosurevof the`inventi `n `only,

and ftliatI am notto be limited thereto, eX? cept, as required by my'claims. v

Invsaid drawings,'in which the same reference'numera'ls designate the Vsaine parts throughout, Figure l1 is a central' vertlcal sectional view of a fragment of a press equipped with my improvements. Fig 2 is an enlarged fragmentary sectional vlew takeny in the same wayas Fig. 1 andfshowing the parts in aditl'erentposition, and Fig. isa' plan view of the pot o-r cylinder' "1n which'- 'the materialis received.

Reference numerals 10 and 1-1des 1gnate the press elements, of which the former, 10,

may be'stationary and the latter, 11,'may be;l

thrust upward under great pressure, preferablv hydraulic pressure, or the member 11 `may be stationary and the member 10 mov- ,ablel g Inrpresses for extracting' the liquid ex'-l ceptacle.

tract from ground cocoa beans the operation of extracting the liquid 'is usually carried out'` in presses'adapted t receive anumber of bore 13- in its lower portion whi'chfis pref# 4expressed fluid out'to thev edges of tlie "24;, whenceit1-flows' down linto theftrougl'; M27

satlite@ 20; 'wi/ e bore 15 (is anfupper provided which' W-11'1, fb' 'referred .to arrire .at s length hereinafter.; y.The pot 12 receives a. .piston "or tending part 1 litting. lS1Il )stanti'allyf c within fthe .cylindrical bo'lejl' .and-preferably provlded with circumferential as shownfat 17 and .;rests upon" the shoulder 14 Aand 1s .providedlwithl all'fupwardly.ex- 11:-

groovesf 19 which servel whenthef'iiidisg'being expressed underA pressnreyas .pacl'ring 'grooves f tical- -drillaholfesy 220r communicating with 'radial 'channels 21, and 'these channels in' turn 'connnu'nicate with 'the' space between'. the

through'the bottom `of .thefp'ot .12. Upon Athe I top vofthepiston 1'6is pl'aced'a'layer 22 of terialfrom-which the fluidextractvisy to bi expressedis thenrplaced within the pot .lillin'g it to' A substantial1y its top and therqav is placed thereon a .pad 23-similar to thepadl- 22g; and of felt yorl'iliev material'which isre ceiveol within an," annular depression 'prof .vided by forming' al rib 23 about the upper outer edge of the pot 12. The pressure'-plate` 24isI secured Vto the press member 10 and is provided with 'vertical ldrill :holesf l25 and preferably-radal'ichannelsf26 lwhich, like the openings-.20v and. 21, servey to conduct, ,the

inthe upperl surface of the potand through' the hleS'QS 4lllilffll's with the Afluid from,L

- the lower portion of thepot in to the troughL 'l 29 in the press' memberIOffrOm.which-itis vcollected asfl by. being v`drawn. olf into a re# 8.0, v porous- 1naterial'- such las felt.. .The cocoaA l1quor .or other substantially semisiuid ma fob " Means are `for prelimi'nsvirilyzse; f' curing .the vpo'tfand its contents covered by the pad 23 in Vplace in the press'and holding 'them inthe proper relation thereto: -In the form shown the pots .are 'provided with' lati,

the press-member v 10 is lprovided with hold- 'erally extending lugs .30, 30 .preferablyof considerable length ,as .jshown'ln `Fi' .3, and ingfmembersxl., 31--having grooves 3 2, 32 "1t-herein .in whielifheluge l30s 3' are were@ and the holding members 31,.` 31 are'pro- -vlded with slots 33, 33 preferably beveled on their-upper `sides as indicated in Fig. 1j,-

vand preferably passing through the press member 10,`and in line with said 'slots isa slot vor aperture 34 in which-is receivedl a slide bar 35 having beveledeportions 36, 36

citizen of the UnitedStates, residing in the be passed through4 Ithe slots l33 vin ythe mem- 3A5lengthwise to clamp the .holding members31 in place areprovided; inthe for'mf shown therebeing a yyoke-37 and abolt 38 1 screw-threaded into the end ofthe lockbary 35.

IVhenfthe filled pots are to be Ainserted place`in the .press thev members 31, 31 are.

referably lowered by permitting the clampmg bar 35 tobe moved'to the left and the -filled pots may then be put in place therein, the lugs y being slid into the grooves in the *.members. 31v until means provided"l for that purpose prevents such further sliding movement, `,as by contacting witha portion ofthe. press. In the form shown the pot 12 is provided withv an upstanding lug 40 to serve as a s'top, stopping the movement ofV the pot so thatit registers centrally under the plate 24.v The pot 12 being thus located in proper position is clamped to the press member 10 by screwingy up on thescrew-38,

thereby drawing the clamp bar35 outward,

thus elevating the -members 31 and .thepot 12 and clampingthe pot 12 firmly against the lower surface ofthefpressure plate 24 and thereby elevating the ypot and its con-` .tents from substantially the dotted line position shown `in Fig. 1 to thefull line position shown in said iigurefand confining `the filter pad 23 between the top of the pot and the'pressure plate 24.

The press member surface of substantially the same size and shape as the bottom of the piston 16 or slightly smaller and serving, when the press member 11 is elevated, to eXert upward pres- 11 is provided with ay presser-head 42 vpreferably having an upper,

ibers 31, and means for moving said lock bar 1 pot. This has been done in order that it may efpos'sible to remove the hard cake formedl inthe press after-the liquor .has been ex- -tracted, and with'such devices it 'has been necessary,; in order to prevent the liquor from escaping past the piston, to provide special cupl packings of felt or the like for l turn the same t'o their initial'positions atthe bottom ofthe pots, as is necessary for subsequent operations with the new batches of material from which the liquid is to be eX- pressed. It has been the practice to pound the pistons downward, in the old pots having bores of uniform tapenandcup packings, with lead hammers and the like and the rough -treatment to which 'these parts must sure von the piston 16 By such pressure,

preferably hydraulic pressure',.the piston 16 may be elevated to the position shown in Fig. 2 in which position substantially all the fluid extract has passed through the filter pads 22 and 23 -and out through the channels provided for that purpose and then colles lected from the trough 29 in which it accumulates,

which cannot pass through; the filter" pads remains between the filter pads and is coml the lower portion of the pot. Wlth my conpressed into a very hard and solid mass. f

In devices for this purpose as heretofore constructed the potshave had a bore tapering substantially uniformly from the smallest diameter at the bottom to the largest d1- ameter at the top, the taper bein the same` and continuous throughout the height of the and a cake 43 of the solid matterV be subjected frequently results in breakage -and `in scratching the bore of the pots and otherwise results in the necessity fo-r frequentrenewals and'cleanings and repairing ofthe parts of this apparatus.

There is a substantially definitel ratio, in

the case of material, such as ground cocoa beans, between the quantity of material ini-A.

tially treated and the material of. the resultinglmass or 'cake remaining after the eX- lpressing has been completed. For example,

for a potcontaining ground cocoa liquor four inchesin depth, the resulting cake is practically one and a half inches in thickness. I have found that by making the wall lI3 of the pot 12 cylindrical and making no provision for. packing the piston 16 except the grooves 19, and by conning all the' taper of the bore of the pot to the upper portion 15 thereof, it becomes possible, by rea son of the considerable degree of taper' which may be given in this neighborhood, vto

readily remove the cake which is formed,

and which is substantially cylindricalv during all the processes ofI its formation until at' or about the completion thereof and is4 i therefore not as greatly solidified at its edges as throughout the principal portion of its mass, from the enlarged bore portion 15` of the pot with substantial ease, and that the piston does not clog and it is possible to return the piston 16 to its position at the bot- Atom of the pot without the exercise of any considerable force and without any particullar difficulty, the piston sliding smoothly down the cylindrical wall of the bore 13 at tically forms a packing; this, together with the closet of the piston top 18, prevents the stickor bind in www@ Aliquor fromesca-ping.` This close fit is maintained at all timesbecause thepiston travels through 'a bore of 'constant diameter, and

cure yvastly better results than have' heretoforegb.eenobta ined-,andthe device can be used :over long period of .time without in- ]uly' and with-011" t; which 'heretofore has been necessary. Y'lh'e operation'of apparatus has vbeen fully-set forth in'. connection With its descrip. tiomf Itwillbe understood thatchanges and modifications in the construction illustrated l maybe vresortedto Within the scope of my claims withoutdeparting from or sacrificing'. I

the-.advantagesof myinvention. Having .thus described my invention, I cla'mi: 1. 'press cylinder for extracting liquid v froin,f 1iquid` 4containing substantially semis'olid materials having a. uniform straight bore. throughout apart of its height and the rest of 'the 'bore .being ltapered. p

.f2 v The -combi'nationjot a press cylinder tracting liquid from liquid containing ted' to traverse the straight bore e ract-in'g liquid fromliquid contaming ma- AVtelrials' ing a .uniform straight bore lower spared bore .of Alarger diameter, a' piston l ne for-clamping said pressfcylinderto-a Tiiefcombination of a press cylinder' for -eatractingliquid from :liquid contaminay ma# ecessity o flresorting groove, and said cylinder having a" bore tion joining the lfirst named bore portion and 4o flar, 'er diameter and from which the .cake of solid material, remaining after liquid hasV aving' a uniform straight*bore a tapered bore portion, vanda.-

;nait'ion 'of a press Acylinder'ifor -4 he combination of a press cylinder for andan upper portion provided with" reversing the straight bore' portion, and- `hereto set terials having a straight boreportio'n, and

a piston adapted to traverse saidl straight bore portion anda taperedborev portion ofisolid material, remaining after liquid has been expressed, may be easily removed.

Joining'. the straightfbore portion and of .largerdiameter and from which the cake- I '6. The combination of a press cylinder for expressinguid from' liquid containing solid materials -having a straight boreportion and a tapered, boreportion of substantially onethird the' height of the straight bore portion.

l In a press,1 an upper .press member, clamp-ing means thereon, avcylinder for con-` taining material fromwhich the fluid is to ybe expressed, said cylinder being adapted'to be clamped to said press member by said clamping means said cylinder -having va straight loWer'bore portlon andan upper tapered boreportion, a piston in thestraight bore portion, a` second press member, and a press head adapted to press'said piston up- Wardly Within said cylinder.

8. The combination of a press cylinder for extracting liquid fromliqui containing ma- .terlals having a straight bore port1on, and a piston adapted to traverse said borel portion, said piston ybeing provided with a packing porbeen expressed,'may be easily removed; i

9. The combination of a 'press cylinder for extracting liquid :from liquid containing ma- 1 .'Cerials having a uniform straight bore lower portion and' an -upper portion` provided with a'tapered bore of'larger diameter, a piston for traversing the straight bore portion and i being provided with a 4plurality of packing grooves', and means for clamping said, press cylinder to a press. n

.10; A presscylinderfor extracting liquid from liquid 4'containing solid materials having a uniform straight bore 'throughout 4a partof-it's height and adapted to be traversed'.

by a piston. and the rest of of larger diameter. l

-In testimony the bore being that .Iciaimthe foregoing, if my hand, this l5th. 'day 0f; July,

f reen scmevnn.y l 

